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Ioannes II Komnenos Ioannes VIII Palaiologos Ioannes VI Kantakouzenos Ioannes III Doukas Vatatzes Ioannes V Palaiologos Ioannes I Tzimiskes Ioannes Skylitzes Ioannes Zonaras Ioannina Ioannes KinnamosTài liệu tham khảo
WikiPedia: Ioannes_IV_Laskaris https://books.google.com/books?id=XymeBQAAQBAJ&pg=... https://d-nb.info/gnd/102544468 https://viaf.org/viaf/17617331 https://www.wikidata.org/wiki/Q37088#identifiers https://www.worldcat.org/identities/viaf-17617331